Engine-valve.



S. RQSENZWEIG.

ENGINE VALVE.

APPLICATION FILED AUG. 1, 1914.

Patented Jan. 19, 1915.

2 sHEETssH EnT 1.

lnvcn lot wihwoaeo s: ROSBNZWEIG. ENG-HIE VALVE.

APPLIOATIQN FILED AU'G. 1, 1914. 1 11. fififi ia Patented Jan. 19, 1915.

2 SEBETS-SHEET 2.

snow x roan hurrah s rairr s recrsu'r orricn SIEGEBIED ROSENZ'WEIG, OF YORK, EEN NSYLVANIA ENGINE-VALVE.

Application fl cdAugust 1. iaiei To all 'cc/lrrm, it may conbcrn Be it known that I, Smeranzn Ros answers, a citizen of the German Empire. residing at York, in the county of York and State, of Pennsylvania. have invented certain new and useful Improvements in EngineValves. of which the followingis a specification.

My invention has ta) do with valves of the or gas from the steam or valve chest into the cylinder port, by resting with their seats upon corresponding seats in the steam chest and thus closing the inl t to such port. The steam chest is usually of cylindrical Form and is cast integral with the steam cylinder, as in the well known (orliss engine. in the simplest design of such engines, the seats in the steam chest with which the puppet valves co perate. have been cast integral with said chest. chamber in the steam chesty clearanc chamber I mean the open space intervening between the closed valve and the inlet in the steam cylinder-in this design were formed in the steam chest itself. Such design, ho\vever,-is open to serious disadvantages, owing to difficulties arising: in and growing out of the casting operation. and to the impossibility of renewing and replacing the valve seats in case of accident. To remedy these difiicnlties, the valve seats. which before were inti'i qral with the st am chest. have been formed in and integral with a cage removabl v fitted and held in the steam chest, the front and rear-valve seats being connected and held together by longitudinal ribs extending like rods through theclear ance chamber. the limiting! walls of which chamber were formed, asbetore. in the steam chest. The ribs the cage a skeleton formation, the openings between the ribs communicating with that portion of the clearance chamber formed in the circumscribing walls of the steam chest. This design provides a means for readily machining, renewing, and replacing the valve seats; but it is open to objections which seriously impair its. usefulness. These ob jections grow out of the presence of the seat connecting ribs, which not only give rise to specification of Letters Yatent.

disadvantages The limiting walls of the clearance.

Patented Jan. 19?, 1915:.

Serial No. 254,554.

unequal expansion in the casting operation, but increase largely the surface area of the clearance chamber with which the entering steam must contact, with corresponding in creased liability to initial condensation. They also have a disturbing ell'ect upon the smooth and even flow of the steam. The'ifltervals or spaces between the ribs through which the steam dirculates enhance this dis turbing effect, and add to the volume of the clearance chamber which also is objection able. it is well known that, in steam engines particularly, the reduction of the surface area and volume of the clearance chamber is of much consequence for the obtaining of high economies.

It is the object of my invention to realize these advantages well as to obviatethe above referred'to as inherent in other designs. To this end I combine with the steam chest a valve cage rcmovably fitted and held therein, which cage is of smooth, symmetrical, unbroken exterior to perm-it it to be easily machined and finished, and contains within itself not only the valve seats integral with it, but also the clearance cham er, the side walls of which are formed by the unl'uoken shell of the cage. In this way the clearance chamber in the valve chest is confined wholly to the interior of the re" n'iovable cage, there is no portion of said chamber in the outer circumscribing walls of the steam chest, and no skeleton formation of the care at the pointwvhcre the clearance chamber is located; the said chamber is un obstructed to the smooth and even tlow of the entering steam, and the construction is such as to permit reduction of surface area and volume of the clearance chamber to the possible minimum. I provide for the necessary increase in volume of clearance as the. inlet opening to the steam cylinder is approa hed .bv inclining'rearwardly the rear wall of the clearance chamber, to increase the crosssectional area of the latter as it no: the steam cylinder. In this way the needed increase is provided for without dis turbinL' or a liectina the symmetry of the ca terioiof the case.

To ena le those skilled in the art to bet.- ter understand and use my invention. I will now proceed to describe the manner in which the same is, or may be, carried into effect by reference to drawing in which- Figure 1 IS a sectional elevation of a perthe accompanying tion of steam engine embodying my invention, the section. lining vertical in the piano of tho inngituclinal axis of the steam chest of one ol. the steam inlet valves; Fi Cl. section on line Fig.5. 1, showing a f 11;; nwntary portion. of tho stoain cylinder and its pistoiii.

A is the steam oylinclo and B is the steam ohost or if} linrlur cast inj one with the steam rylintlor anll gned to contain the steam inlet \a. x Mn Jill tin onr. of those valves at nanh our}. oi tin: stonin oylirnlm', as us ml in enginns ni' this nharzirter.

Cl is the cage of cylindrical exterior, r0- inovnhly l'ltttxtl and held in the steam chest ill, and towing cast integral. with it the front an roar 'annnlar valve SihlllS 1,

.l.) is the rlen'anco cllainher formed and contained within tho cage; and a is the inlet port through which the steam enters tho steam cylinilor A. .Zlhn rear wall of the clear nnoo chnnihnr indicated. at (Z Fig. l, and, as there shown, it inclines rearwarilly as it approaches tho inlet port 0, thus ollocting tho .naurssary incr ase in tho volun'io, or, in othoi- \VUIllS, tho crosr sootinnal area, of the clearance chamber as it not 110 entrance to the steam cylinilnin This, it will. he notoil oll'vctiril without disturbing tho syn'nnetri val ryliinli'ical contour of tho Valve tango (1 It will he noted also that tho 1 chain hnr ill) has a ioiiith nnhrolwn and nn filr struntoil in i lillilfilll' ll'l'ililj, and that it is nonlinml woolly within to walls of tho rng'n (l Within hill strain rhrst ii i nnichiniinl wit a stat l int-1;- whirh tho Ii (I? iittnil cloaoly, fliltl prossoil hat-h to o no agahnet n shaulihr l /him thin; ll 'itsnt it thorn held a wh r at tho sauna tiinn it nmy, nhnnni occasion ilv i'nnnils, hn rnnnnnil anil rnphutezitl hy it fresh cngn. Tho jointl Noon it in'n'l the steam rrli shonlili o (Fifi-5kg ho .siioani glit, to 'wl'iirh rnil any t: hio {inching moans may ho tfiillill ytlli, as will ho uinlnrstooil without further nx ilanation by those skilled in the art to which this ini'nntiiiin prrtaint-t iijhin the oag'n (I an nxial tubular hea ing or guuln, ax, for the valve spindle "Lit which uni-i ins he pnmw't valve V of usual const' n1 ion. with lanes *1, if, to (wh mrato with tho soats r1, :3", in the cage (.1 Any snitnhla lorin ol' Mal /o gear to oporato tho valve may ho employsd -prefernhly that form of valve gear which is the snhject of my Patent No. 1,059,567 of April 22, 1913, and which is int. .itocl in the draw' 1'.

The invention l'ioroinheforri described is appli :ahle to the exhaust Yalvo as Well as to the steam inlet valve, and I desire to he understood as including any such obvious modification in my clain'ls. I

Having (inscribed. my invention and the host way now known to inn oi. carrying the szuno into 1) actisal. client, I stato in conclusion that 1 do not limit myself strictly to and set forth in illustration of my invention for manifestly the same can be varied to some rxtont without depnrturo from the spirit of the invention; but

What I horn claim and desire to secure by Letters Patent is as follows:

1. The combination with the steam chest, stnun cylinder and steam valve, of a valve mum having a syninmuical unbroken oX- tLIlUI. and littotl. and. relnoruhly held in '1 s at oi (mi-responding shape forinod for its reception in tho steam chest, said (rage being proviil eii with valve seats in its interior to roilpnrntn with sniil steam valve, ainl with :1 ohinmnvv (llitllllLl' hotn 'wu the valve seats ancl thrnnll'nmro to tho strain cylinder having a iznioi'ilh.unol struistotl interim", and con llllt'ti wholly within thn walls of the, cage.

L. Tho irninlrination with the strain ohost. i-ilmnn vylinrhi' iillll stean'i wire, of" :1 valve (awn inning; a "lllllitll-l'llfilti unln'onni ex" tumor anrl. littril anti rmi'iovnhly hnhl in a suatul' normsnoniling shape ilorineil for its rrxrnption in. the l EIHil chest said rage being kind with 'oaL-s in its interior to wi'ntu with h: ll. can: Volvo, and with loarunno olniniimr hotnron tho \alvo soats and tin: mitrainzn in the stoinn cylinilor, hnv in a :nuooth. nno stsru hnl. interior, and non llfll ,i'lnilly within tho walls of tho :ago, in ma: wall oi. this nlnaranco chamber in:-

lined ronrnardly so as to increase the to tional arm of the chamber as it apn'oai'hiitlm nntranon to the steam cylinder. in lllllfltlll lf whoroof Il. allix my signature. in. prnsnncn of two witnesses.

SHQGFREED ROSENZW'EIG. es:

Mans'ron, As. Si Illxnn. 

